Stackable tray and stackable folder for filing

Abstract

The invention relates to a stackable tray comprising an outer sheet with foldable tabs that fold around an inner sheet, and columns glued to the inner sheet. The outer sheet is glued to the columns and the tabs are glued to the inner sheet. The folder is the same tray but with an added cover glued to the left side of the tray. The trays or folders can be stacked one on top of the other, the inner sheet being supported on the columns, the columns being supported one on top of the other. The trays have side labels that allow them to be identified from the side when they are stacked, and a front label that allows the cover to be identified in the case of a folder.

What is claimed is: 
     
         1 . A set of stackable trays and stackable folders for filing:
 each of the stackable trays of the set comprising:   an inner sheet, an outer sheet, and columns, wherein the inner sheet and the outer sheet are independent sheets, wherein the inner sheet has four sides and four corners,
 wherein the columns are glued to the inner sheet, 
 wherein the outer sheet comprises folding tabs folded around the inner sheet and the columns, 
 wherein the folding tabs are glued to the columns and the inner sheet, 
 wherein the columns are equally distributed at midpoints of the four sides of the inner sheet and on the four corners of the inner sheet, and 
   wherein the folding tabs of the outer sheet of the stackable trays include horizontal tabs configured to form a frame that is parallel to the inner sheet of the stackable trays; and   each of the stackable file folders of the set comprising:
 an inner sheet, an outer sheet, columns, and a cover sheet, wherein the inner sheet, the outer sheet and the cover sheet are independent sheets, wherein the inner sheet has four sides and four corners, 
 wherein the columns are glued to the inner sheet, 
 wherein the outer sheet comprises folding tabs folded around the inner sheet and the columns, 
 wherein the folding tabs are glued to the columns and the inner sheet, 
 wherein the columns are equally distributed at midpoints of the four sides of the inner sheet and on the four corners of the inner sheet, 
   wherein the folding tabs of the outer sheet of the stackable folders include horizontal tabs configured to form a frame that is parallel to the inner sheet of the stackable folders, and wherein the cover sheet is glued to a portion of the frame.   
     
     
         2 . The set of stackable trays and stackable folders for filing according to  claim 1 , wherein when a second stackable tray or a second stackable folder of the set is stacked on top of a first stackable tray or a first stackable folder of the set, the columns of the second stackable tray or the second stackable folder are configured to rest one on top of the columns of the first stackable tray or the first stackable folder. 
     
     
         3 . The set of stackable trays and stackable folders for filing according to  claim 1 , wherein the columns of the stackable trays and the stackable folders are hollow or solid. 
     
     
         4 . The set of stackable trays and stackable folders for filing according to  claim 1 , wherein each of the stackable trays and the stackable folders have four sides that are reinforced in the same way through equally distributed columns at the midpoints of the four sides of the inner sheet of the stackable trays and the stackable folders and on the four corners of the inner sheet of the stackable trays and the stackable folders. 
     
     
         5 . The set of stackable trays and stackable folders for filing according to  claim 1 , wherein the inner sheet of the stackable trays and the stackable folders has a thickness dependent on a quantity of paper documents to be supported. 
     
     
         6 . The set of stackable trays and stackable folders for filing according to  claim 1 , wherein the frame of the folding tabs of the outer sheet of the stackable trays and stackable folders covers an upper face of the columns of the stackable trays and the stackable folders and serves as a support surface for the stackable trays and the stackable folders of the set when stacked. 
     
     
         7 . The set of stackable trays and stackable folders for filing according to  claim 1 , wherein the stackable trays and the stackable folders have a heights selected from: ⅛, ¼, ½, 1, 1.5 or 2 inches. 
     
     
         8 . The set of stackable trays and stackable folders for filing according to  claim 1 , wherein the stackable trays and the stackable folders have a size configured to file documents of different sizes selected from: letter, half letter, legal and tabloid.